. >> greta: mahmoud ahmadinejad took the stage at the u.n. general assembly prompting the annual walkout, but many protesters outside say this year's speech is different. it's the ultimate insult. the man who wants to wipe israel off the map speaking on yom kippur, an important jewish holiday. >> iranian president mahmoud ahmadinejad delivering his hate-filled rhetoric, and thousands of protesters turned out. >> we're here to support the opposition in iran, an to suppot against the dictator in iran. >> we are here to support our iranian brothers for their freedom since we have the same struggle, the same war, against this regime. >> the united nations is now anti-israel that the general assembly routinely does things that are disruptive. >> he's a murderer. he does not represent the iranian people. >> i was a student in the university of tehran. i know ahmadinejad is one of the persons that was torturing political prisoners. >> but the obama administration is not for regime change in iran. it shows a level of weakness that's dangerous. i call